JPH0463078A - Portable picture and voice reproducing device - Google Patents

Abstract

PURPOSE:To prevent a user from being in danger regardless of the use in the middle of walking, to reproduce powerful sounds with presence, and to enable him to distinctly see small characters by setting a picture display device consisting of a small screen and an enlarging reflection mirror made of a transparent material to a part of the human body, from which the distance to his eyes is fixed, to hold this device before his eyes. CONSTITUTION:The signal of a reproduced picture reaches a small screen 5 through a lead line 8 and is projected as a visible image. The light of this image reaches a wide angle reflection mirror 6 from the small screen and is reflected and reaches an enlarging reflection mirror 7 and is reflected again to reach user's eyes. Since this optical system is used, the picture is seen as a virtual image 13 enlarged to the front by the user. The front scene can simultaneously be seen beyond the enlarging reflection mirror because this mirror is transparent. Since the wide angle reflection mirror 6 is convex, the projection range is wide though this mirror itself is small, and the whole of the range is projected on the small screen though it is somewhat large.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention is applicable to video tape decks, video disc players, etc. that play back images and audio from storage media such as video tapes and video discs on which images and audio signals are recorded.
The present invention relates to a portable image and audio reproduction device that reproduces both images and audio.

[Prior Art] Conventionally, there are video tape decks, video disc players, etc. as image and audio reproducing devices that reproduce both images and audio.Usually, these are large and cannot be used while walking.

Playback devices that can be used while walking include small tape recorders, compact audio disc players, etc.
There are devices that do not play images but only play audio.

[Problems to be Solved by the Invention] The nine image/audio playback devices are large and cannot be carried, so they have the drawback of limiting the places where they can be viewed, which limits the opportunities for use.

Some of them are small-sized ones that use liquid crystal screens or the like, but they have the disadvantage that the screen for displaying the wall image is too small, making it difficult to see the fine details of the image. This is particularly difficult when used for replaying and viewing teaching materials that require the use of many small characters as images. The small size of the image display screen also has the disadvantage that the images lack impact and a sense of excitement.

If the image display screen is small, you must hold it close to your eyes in order to view it, but holding it for a long time can make your hands tired.

Although it is small and portable, even if you try to look at it while walking, you cannot actually look at it because if you look at the image display screen, you will not be paying attention to the road ahead, which is dangerous.

For the reasons mentioned above, opportunities for use are naturally limited.

[Means for Solving the Problems] In order to solve the above problems, the present invention provides a portable image and audio playback device that plays back images and sounds from a storage medium that records image and sound signals. An image display device consisting of a small screen that displays an image and a magnifying mirror made of a transparent material that magnifies and reflects the image.
To provide a portable image and sound reproducing device, characterized in that it is held in front of a user's eyes by a mounting tool attached to a part of the human body at a constant relative distance from the eyes.

A means of increasing the brightness of the image on the small screen to make the image darker and easier to see, a coating layer that reflects the image light well on the magnifying mirror, and a light shielding plate at the end of the magnifying mirror that limits light from the front. It is better.

[Operations] Since the present invention has the above-described configuration, it is easy to carry, and the user can use the image display screen without having to hold it in his/her hand, so his/her hands do not get tired. Regardless of the user's posture, the image appears to overlap with the front view in the direction of the user's line of sight, so there is no danger even if the user uses it while walking because the user's attention will be drawn to the image and the front view in the same direction. . The image is enlarged and appears larger, giving it a powerful and realistic feel, and the fine print is clearly visible.

[Example] FIG. 1 shows a first example of the present invention. (1) is the playback device itself, which is a video disk player or video tape deck. (2) is an earphone that generates the sound to be played, (3) is an attachment device, (4) is a hair band that assists the attachment device (3), and (5) is a small screen that displays images visualized by playback. , (6) is a wide-angle reflector, (7) is a magnifying reflector, (8) is a lead wire that transmits the image signal reproduced by the reproduction device main body (1) to the small screen (5), and (9) is a reproduction This is a lead wire that transmits audio signals reproduced by the device body (1) to the earphones (2). (10) is an operation switch for operating the playback device main body (1);
) is a lead wire connecting the playback device main body (1) and the operation switch (10), and (12) is a hanging band. A groove (4a) is provided at the lower end of the hair band (4), so that the tendril-shaped portion of the attachment tool (3) can be inserted into the groove.

Although the front side of the wide-angle reflector (6) cannot be shown in this figure as it faces away, it is a convex mirror that reflects a wide area. The magnifying mirror (7) is made of a transparent material such as glass or plastic, and has a concave surface on the front side. A curved plate with a constant thickness may be used, but a spectacle lens may be used instead.In this case, if a spectacle lens that matches the user's visual acuity is used, there may be no need to wear glasses.

When a storage medium such as a video disk or a videotape on which images and audio are recorded is inserted into the playback device main body (1) and the playback device main body (1) is operated using the operation switch (10), the audio in the storage medium is The signal is transmitted to the earphone (2) via the lead vA (9) and becomes sound, and the image signal is transmitted via the lead wire (8) to the small screen (5), where a visualized image is displayed.

For the small screen (3), it is best to increase the brightness of the image displayed on it, so the small screen itself should emit light, such as a plasma display type with high screen brightness or an LCD type with a backlight, or else a As usual, take measures such as preparing a separate light to illuminate the small screen, or making the small screen translucent, such as a liquid crystal type, and using external light coming from outside.

A method of using the portable image and audio reproducing device of the present invention will be explained with reference to FIG. The user carries the playback device main body (1) by wearing the hanging band (12) over the shoulder. Put the earphones (2) into your ears. The mounting tool (3) is worn with its rear end placed over the ears like the temples of a pair of glasses. At this time, the hair band (4) is placed on the head and worn, and the tendril-shaped part of the attachment tool (3) is fitted into the groove (4a) at the lower end of the hair band (4) to support it. This lifts up the magnifying reflector (7) at the front of the attachment (3).
It is held in the air so as not to hit the user's nose.

When you hold and operate the operation switch (10) to operate the playback device main body (1), the audio signal stored in the storage medium is played back and transmitted to the earphones (2) and becomes sound. audible to the user's ears. The signal of the reproduced image passes through the lead wire (8) and reaches the small screen (5), where it becomes a visualized image. The light in the visualized image is
The path shown by the arrow line in the figure leads from the small screen (5) to the wide-angle reflector (6), where it is reflected, and then to the magnifying reflector (7).
The light then reflects again and reaches the user's eyes. As a result of using such an optical system, the image appears as a virtual image (13) greatly magnified forward when viewed from the user's eyes. Since the magnifying reflector is transparent, you can see the scenery beyond it at the same time. By making the wide-angle reflector (6) a convex mirror, even though it is small, it can reflect a wide range, and even if the small screen (5) is somewhat large, it can reflect the entire range, and the reflected image is Even if it becomes small, it is magnified again by the magnifying mirror (7), so it becomes a size that is easy to see. Since the wide-angle reflector (6) can be made small, it does not get in the way in front of your eyes.

The imaging position of the virtual image (13) is determined by the power of the magnifying mirror. The power is adjusted so that the image formation position is between the distance of 25 cm for clear vision and infinity from the eye. If the distance is within this range, the user's eyes will not get tired.

In this example, a convex mirror was used as the wide-angle reflector (6), but
It is not limited to this. A wide-angle reflector can also be created by placing a concave lens in front of a plane mirror. Further, a concave mirror with a high power is used, or a convex lens with a high power may be placed in front of a plane mirror in combination. However, in that case,
Since the statue will be inverted, the small screen (5) will be placed upside down by 180 degrees.

Since there are no moving parts such as joints between the human eyes, head, and ears, the relative distance between them is constant.

Therefore, in the image display device of the portable image and audio playback device of the present invention, the relative distance to the user's eyes remains constant no matter how much the user moves, so there is no change in the way the image is viewed. The distance from the eye is determined by the degree of the reflector and is always constant, so there is no need to worry about adjusting the position every time you move. Because the image is always visible in the user's field of vision and can be handled hands-free, it is easy to continue viewing while walking, sitting in a car, or lying down.

FIG. 3 shows a second embodiment of the present invention. In this example, the attachment device (3) is in the shape of headphones worn over the head and is integrated with a hair band (4). In front of it is a pillar (
14), (15), small screen (5), wide-angle reflector (
6), a magnifying reflector (7), and a lighting lamp (16) are fixedly held.

The illumination lamp (16) is a means for illuminating the small screen (5) to increase the brightness of the screen. The illumination light (16) may be provided on the back side of the small screen (5) contrary to Fig. 3, and be of a backlight type that illuminates the small screen (5) from the back. Even if the image does not emit light by itself, the image will shine with the irradiation light, and the light of the image will be reflected on the wide-angle reflector (6) along the path of the arrow line, and then the magnifying reflector (6), just as in the previous example. Since the light of the 0 image reflected on the inner surface of 7) and reaching the user's eyes is strong, the virtual image (13) visible to the user's eyes becomes darker and easier to see even in a bright place.

Further, the inner surface of the magnifying mirror (7) is coated with a coating layer (70) that increases the reflectance of light. The coating layer (70) is made of a material whose reflectance is selectively high for the color of the light of the image. That is, when using a plasma display type that emits red light as the small screen (5), a coating layer with a particularly high reflectance for red light is used, and when using a blue type liquid crystal type. This involves applying a coating layer that has a particularly high reflectance to your light.

By doing this, the light of the image is magnified by the reflecting mirror (7).
The virtual image (13) becomes darker and easier to see even in bright places than outside light. When the small screen (5) is a color screen, the coating layer (70) is preferably shaped like a one-way mirror.

If the small screen (5) is made of translucent liquid crystal, the illumination light (1
6) is not necessarily required, that is, if external light (18) brighter than the front enters and passes through the small screen (5),
The brightness of the image will increase, similar to when the image is backlit. Since no lighting lamp (16) is required, power is saved, which is extremely advantageous for a portable device that uses batteries with limited power.

A light shielding plate (17) that can be slid up and down is provided at the tip of the magnifying mirror (7). This light-shielding plate (17) is a plate for the purpose of restricting incident light from the front when the area in front of the user is too bright and obstructs viewing the image, and is made of a dark transparent material similar to sunglasses. make. By restricting the light coming from the front and darkening the area in front of the eyes in this way, the brightness of the virtual image (13) becomes relatively high compared to the external light coming from the front, making it very visible. Since the light shielding plate (17) is not required when walking on a dark road, the light shielding plate (17) is designed to slide up and down so that it can be lifted to the position indicated by the two-dot chain line in the figure.

In this example, unlike the previous example, there is a small screen (5), a wide-angle reflector (
6), only one magnifying reflector (7) was provided. Compared to having two lenses for each eye, this eliminates the hassle of adjusting the left and right diopters.

[Effects of the Invention] As described above, in the portable image and audio playback device of the present invention, the user places the image display device, which projects an image on a magnifying mirror made of a transparent material, at a position at a relative distance of 1 - constant from the user's eyes. Since the device is worn on the user's body, the image is always magnified as a virtual image in the direction the user's eyes are facing, even when the user is not holding the device, and the user can also see the scenery in front of him, that is, on the other side of the magnifying mirror.

Therefore, since it can be used while walking without causing the user to become inattentive to the front, it can also be used while lying down, and can be used in any posture, so there are almost no restrictions on its use.

Since you can see the scenery in front of you and can use it hands-free, it is ideal for use when you are in a standby state where you cannot take your hands off or take your eyes off the road, such as when driving on a congested road, and it saves waiting time. It has many benefits, including making effective use of the service and eliminating the frustration of waiting.

The enlarged image gives it a powerful and realistic feel, and even when images such as teaching materials with small text are projected, it is not difficult to read, making it suitable for all kinds of purposes, from entertainment to study.

In particular, when used to play back teaching materials, unlike tape recorders and audio disc players that only play back audio, the images that are always seen visually can be seen in front of the eyes along with the audio, so the synergy between the two creates an educational effect. becomes definitely larger.

By using means to increase the brightness of the image on the small screen, the image becomes darker and easier to see even in bright places than outside light.

By applying a coating layer to the inner surface of the magnifying mirror that increases the reflectance of light, the image becomes darker and easier to see even in bright places than outside light.

If a light-shielding plate is installed at the end of the magnifying reflector to restrict light from the front, the image will be relatively dark and easier to see.

[Brief explanation of the drawing]

FIG. 1 shows a first embodiment of the present invention, FIG. 2 shows a method of using the portable image and audio playback device of the present invention, and FIG. 3 shows a second embodiment of the present invention.
Example. (1) Playback device main body, (2) earphones, (3) attachment device,
(4) hair band, (5) small screen, (6) wide-angle reflector,
(7) Magnifying reflector, (10) operation switch, (13) magnified virtual image, ing layer. (16) Lighting light, (17) Shading plate, (70) Coach

Claims (1)

[Claims] 1. A portable image and audio playback device that plays back images and sounds from a storage medium that records image and sound signals,
An image display device consisting of a small screen that displays the image visualized by reproduction and a magnifying mirror made of a transparent material that magnifies and reflects the image is attached to a part of the human body at a constant relative distance from the eyes. A portable image and audio playback device characterized in that it is held in front of a user's eyes. 2. The portable image and audio reproducing device according to claim 1, further comprising means for increasing the brightness of the image on the small screen. 3. Claim 1, characterized in that the magnifying reflector is coated with a coating layer that has a high reflectance for the light of the image on the small screen.
3. The portable image and audio reproduction device according to item 1 or 2. 4. The portable image and audio device according to claim 1, 2, or 3, further comprising a light-shielding plate provided at the tip of the magnifying reflector to restrict light entering the magnifying reflector from the front. playback device.